Company lists · Data refreshed September 2026

Top 25 SEO B2B companies worldwide

Name: SEO B2B companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 14,669 companies tracked

RevenueBase identified 14,669 SEO B2B companies worldwide as of September 2026 and tracks 68,300 professional contacts across them, including 9,994 with verified work emails. The United States is the largest market and London the largest hub.

This list covers SEO B2B companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for SEO B2B companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

14,669Companies

68,300Contacts tracked

9,994Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest SEO B2B companies worldwide

Ranked by team size

Top 25 of 14,669 SEO B2B companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to SEO B2B companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SEO INC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 21, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 21, 2026
2	KPL Tech Solution Pvt. LTD	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 21, 2026	201-500	390 contacts →
	Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 21, 2026
3	First Page	Indirect evidence	Melbourne, United StatesHQ checked Sep 21, 2026	201-500	332 contacts →
	Indirect evidence “When it comes to Digital Marketing, it’s the First Page, or it’s nothing.” Source: RevenueBase Database · checked Sep 21, 2026
4	Boostability	Partial evidence	Lehi, UT, United StatesHQ checked Sep 21, 2026	201-500	326 contacts →
	Partial evidence “At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.” Source: RevenueBase Database · checked Sep 21, 2026
5	Techwyse Internet Marketing	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	233 contacts →
	Indirect evidence “If your business isn't generating consistent leads online, the problem usually is your digital presence.” Source: RevenueBase Database · checked Sep 21, 2026
6	Herold	Indirect evidence	Vienna, AustriaHQ checked Sep 21, 2026	51-200	190 contacts →
	Indirect evidence “Seit der Gründung in 1919 hat sich Herold laufend weiterentwickelt und ist heute Teil der group.one, die zu einer der führenden Unternehmensgruppen in Europa im Bereich Domains…” Source: RevenueBase Database · checked Sep 21, 2026
7	Futur Digital	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 21, 2026	201-500	163 contacts →
	Indirect evidence “Votre agence de Marketing Digital, spécialiste du référencement local depuis 2009 Chez Futur Digital, nous comprenons l'importance cruciale d'une présence digitale robuste pour…” Source: RevenueBase Database · checked Sep 21, 2026
8	Brandrep	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	152 contacts →
	Partial evidence “Local Marketing Company who specializes in helping small businesses with building and managing their online presence through Local SEO, Lead Generation, Local Directory submission…” Source: RevenueBase Database · checked Sep 21, 2026
9	Liveseo	Partial evidence	Maringá, BrazilHQ checked Sep 21, 2026	51-200	141 contacts →
	Partial evidence “Founded in 2016 in Spain, and currently operating in Brazil, liveSEO performs consistent and well-targeted work in SEO (search engine optimization), attracting companies looking…” Source: RevenueBase Database · checked Sep 21, 2026
10	National Positions	Indirect evidence	Westlake Village, CA, United StatesHQ checked Sep 21, 2026	51-200	137 contacts →
	Indirect evidence “National Positions, The Digital Growth Agency, is a 360-degree digital marketing firm located in Southern California.” Source: RevenueBase Database · checked Sep 21, 2026
11	Essentials The Agency	Indirect evidence	Jakarta Barat, IndonesiaHQ checked Sep 21, 2026	11-50	134 contacts →
	Indirect evidence “At essentials the agency, we help brands take control of their digital presence and dominate their online space, not just exist in it.” Source: RevenueBase Database · checked Sep 21, 2026
12	Cannibals Media	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	11-50	132 contacts →
	Indirect evidence “Cannibals Media is a top-rated digital marketing agency in India.” Source: RevenueBase Database · checked Sep 21, 2026
13	Mainstreethost	Indirect evidence	Amherst, NY, United StatesHQ checked Sep 21, 2026	51-200	128 contacts →
	Indirect evidence “Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…” Source: RevenueBase Database · checked Sep 21, 2026
14	Semalt	Partial evidence	Kyiv, UkraineHQ checked Sep 21, 2026	51-200	127 contacts →
	Partial evidence “Semalt is a results-driven, technology-inspired SEO company.” Source: RevenueBase Database · checked Sep 21, 2026
15	Activant Solutions PVT Ltd, Jaipur	Indirect evidence	Jaipur, IndiaHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “With more than 15 years in business and a highly experienced and professional team of more than 100 team members; Activant Solutions Private Limited, founded in 2005 by the…” Source: RevenueBase Database · checked Sep 21, 2026
16	SEOP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	121 contacts →
	Partial evidence “SEOP is one of the leaders in the Search Engine Optimization industry and was co-founded by SEO experts that thrive on a combination of in-depth expertise and creative, forward…” Source: RevenueBase Database · checked Sep 21, 2026
17	Leave Code Technologies Pvt. LTD	Indirect evidence	Laxmi Nagar, IndiaHQ checked Sep 21, 2026	11-50	120 contacts →
	Indirect evidence “Leave Code offers you the best digital marketing services for your products and services.” Source: RevenueBase Database · checked Sep 21, 2026
18	Hennessey Digital	Partial evidence	North Hollywood, CA, United StatesHQ checked Sep 21, 2026	51-200	115 contacts →
	Partial evidence “Named to Fortune’s 50 Best Workplaces in Advertising & Marketing, Hennessey Digital is an award-winning digital marketing agency specializing in SEO for lawyers and other online…” Source: RevenueBase Database · checked Sep 21, 2026
19	Grizzly NEW Marketing	Partial evidence	Breda, NetherlandsHQ checked Sep 21, 2026	51-200	109 contacts →
	Partial evidence “Grizzly New Marketing is een gespecialiseerd SEO marketingbureau in Nederland (Breda en Rotterdam), België (Antwerpen-Berchem) en de Verenigde Staten (New York).” Source: RevenueBase Database · checked Sep 21, 2026
20	Bigseo	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: RevenueBase Database · checked Sep 21, 2026
21	Think BIZ Solutions	Partial evidence	Noida, IndiaHQ checked Sep 21, 2026	51-200	103 contacts →
	Partial evidence “We are specialists in SEO & Web Designing We are extremely skilled and extremely experienced provider of all of the Web solutions available.” Source: RevenueBase Database · checked Sep 21, 2026
22	Savit Interactive	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “Since 2004, Savit Interactive has been at the forefront of digital marketing, empowering businesses across India, the US, UK, Australia, Dubai, and more to build a strong and…” Source: RevenueBase Database · checked Sep 21, 2026
23	Pikseo	Indirect evidence	Bydgoszcz, PolandHQ checked Sep 21, 2026	201-500	102 contacts →
	Indirect evidence “Agencja interaktywna zajmująca się kompleksową promocją firm w Internecie.” Source: RevenueBase Database · checked Sep 21, 2026
24	LEAP	Partial evidence	Berlin, GermanyHQ checked Sep 21, 2026	51-200	101 contacts →
	Partial evidence “When visitors leave your website within seconds, what can your SEO agency do?” Source: RevenueBase Database · checked Sep 21, 2026
25	Ranks Digital Media	Indirect evidence	Ghaziabad, IndiaHQ checked Sep 21, 2026	51-200	100 contacts →
	Indirect evidence “Stop chasing algorithms.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: SEO B2B companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names SEO B2B companies.
Partial evidence: Its own public description names part of SEO B2B companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SEO B2B companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 14,669 SEO B2B companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,994 reachable decision-makers.

Free signup · no credit card

View the full list →

SEO B2B companies worldwide at a glance

As of Sep 21, 2026

14.6%Verified-email coverage

4.7Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

10,569

11-50

3,369

51-200

537

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among SEO B2B companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for SEO B2B companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “SEO B2B companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names SEO B2B companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among SEO B2B companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 9,994 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

SEO B2B companies by location

53 lists · largest first

Every SEO B2B companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names SEO B2B companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many SEO B2B companies are there worldwide?

RevenueBase identified 14,669 SEO B2B companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SEO INC, headquartered in Carlsbad, tops this list with the largest team on record.

Which country has the most SEO B2B companies?

The United States leads with 3,392 companies, followed by India (1,743) and the United Kingdom (997). Every SEO B2B companies list by country and city is linked on this page.

Which city has the most SEO B2B companies?

London leads with 266 headquartered companies, followed by New Delhi (162) and New York (137).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,994 verified decision-maker contacts tracked across these 14,669 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 14,669 SEO B2B companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.